Rear end question
#3
I'm having a hard time finding a posi unit for my cutlass 1971 10 bolt rear end. I want to keep the 10 bolt in there and change the gears and put a posi unit in there... Someone suggested that I may need to go to a 12 bolt rear end since I'm going to be be pushing about 550 hp... Any thoughts or suggestions would be very helpful...
#4
#5
#6
I thought the delta 88 was wider but a guy in the shop said that he thought it would... I figured I better ask the experts for help with my project so that's why I joined the forum...
#7
I'm having a hard time finding a posi unit for my cutlass 1971 10 bolt rear end. I want to keep the 10 bolt in there and change the gears and put a posi unit in there... Someone suggested that I may need to go to a 12 bolt rear end since I'm going to be be pushing about 550 hp... Any thoughts or suggestions would be very helpful...
#8
Also, maybe whoever told you to use a 12-bolt may have meant a Chevy 12-bolt as the Olds Type 'O' uses 12 bolts only on the inspection cover and secures its 8.5-inch ring gear with 10 bolts just like the corporate rear. The Type 'O' isn't really stronger than the 8.5 corporate rear.
#10
Um...
Why are we even talking about a Type O axle? The OP's 71 has a corporate 8.5" ten bolt. The 72 Delta would have come with an 8.5" ten bolt also if it had a 350 or a 9.375" twelve bolt if it had a 455. Yes, the 9.375 is a "Type O", but not the A-body Type O and nothing interchanges.
Why are we even talking about a Type O axle? The OP's 71 has a corporate 8.5" ten bolt. The 72 Delta would have come with an 8.5" ten bolt also if it had a 350 or a 9.375" twelve bolt if it had a 455. Yes, the 9.375 is a "Type O", but not the A-body Type O and nothing interchanges.
#11
#12
Um...
Why are we even talking about a Type O axle? The OP's 71 has a corporate 8.5" ten bolt. The 72 Delta would have come with an 8.5" ten bolt also if it had a 350 or a 9.375" twelve bolt if it had a 455. Yes, the 9.375 is a "Type O", but not the A-body Type O and nothing interchanges.
Why are we even talking about a Type O axle? The OP's 71 has a corporate 8.5" ten bolt. The 72 Delta would have come with an 8.5" ten bolt also if it had a 350 or a 9.375" twelve bolt if it had a 455. Yes, the 9.375 is a "Type O", but not the A-body Type O and nothing interchanges.
#13
If you go to a Type C 12 bolt that would make sense. That is a Chevy 12 bolt and parts are very easy to find. This would be a Chevelle 12 bolt rearend. This would be a big improvement.
I can do one of those if you are looking for that. It is a non-posi but you can get all you need for a gear change and posi carrier for about $600.
Larry
lemoldsnut@aol.com
I can do one of those if you are looking for that. It is a non-posi but you can get all you need for a gear change and posi carrier for about $600.
Larry
lemoldsnut@aol.com
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September 12th, 2014 11:52 AM